Flight crew of medium large transport air carrier aircraft took evasive action to avoid an uncontrolled fast climbing light transport cpr aircraft resulting in less than standard separation and an near midair collision.

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Attributes
ACN	208444
Time
Date	199204
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	msl bound lower : 12200 msl bound upper : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star enroute airway : atl
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 210 flight time total : 13000 flight time type : 2800
ASRS Report	208444
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 210 flight time total : 5300 flight time type : 2600
ASRS Report	208775
Events
Anomaly	conflict : airborne less severe non adherence : far non adherence : required legal separation other anomaly other
Independent Detector	atc equipment other atc equipment : unspecified other controllera other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 200 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On macy 1 arrival 13000 ft/250 KTS on a vector of approximately 250 degrees for spacing. Received clearance to 10000 ft. Received a TCASII RA 3-4 O'clock 1200 ft below us and climbing. Approach controller immediately came back to us with a maintain 13000 ft and pop up VFR at 3-4 O'clock converging. First officer visually acquired a white aircraft Y with red and blue stripes converging. Received an RA TCASII command descent, first officer pushed the nose over, approach issued 'do whatever is necessary.' the aircraft Y passed over us, leveled at 12200 ft, received clearance to 10000 ft. First officer visually kept the aircraft Y in sight and does not believe he ever saw us because no evasive action taken. His approximately heading was 180 degrees and approach believes he had taken off out of gainesville, GA. The entire incident took approximately 45 seconds to 1 min. If we had not been TCASII equipped and had a sharp controller I feel the potential was there for a midair.

Original NASA ASRS Text

Title: FLC OF MLG ACR ACFT TOOK EVASIVE ACTION TO AVOID AN UNCTLED FAST CLBING LTT CPR ACFT RESULTING IN LTSS AND AN NMAC.

Narrative: ON MACY 1 ARR 13000 FT/250 KTS ON A VECTOR OF APPROX 250 DEGS FOR SPACING. RECEIVED CLRNC TO 10000 FT. RECEIVED A TCASII RA 3-4 O'CLOCK 1200 FT BELOW US AND CLBING. APCH CTLR IMMEDIATELY CAME BACK TO US WITH A MAINTAIN 13000 FT AND POP UP VFR AT 3-4 O'CLOCK CONVERGING. FO VISUALLY ACQUIRED A WHITE ACFT Y WITH RED AND BLUE STRIPES CONVERGING. RECEIVED AN RA TCASII COMMAND DSCNT, FO PUSHED THE NOSE OVER, APCH ISSUED 'DO WHATEVER IS NECESSARY.' THE ACFT Y PASSED OVER US, LEVELED AT 12200 FT, RECEIVED CLRNC TO 10000 FT. FO VISUALLY KEPT THE ACFT Y IN SIGHT AND DOES NOT BELIEVE HE EVER SAW US BECAUSE NO EVASIVE ACTION TAKEN. HIS APPROX HDG WAS 180 DEGS AND APCH BELIEVES HE HAD TAKEN OFF OUT OF GAINESVILLE, GA. THE ENTIRE INCIDENT TOOK APPROX 45 SECONDS TO 1 MIN. IF WE HAD NOT BEEN TCASII EQUIPPED AND HAD A SHARP CTLR I FEEL THE POTENTIAL WAS THERE FOR A MIDAIR.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.